What, exactly, is a "prompt engineer"? I should note that this question is asked in good faith, that I have attempted to ascertain the answer on my own, and I am very skeptical that the term has validity beyond self-aggrandizement.
Applied to Chat-GPT, a charitable take on this self-aggrandizement would be that the speaker has requires deep knowledge on the model they're attacking, in the same way a reverse engineer generally knows how X system is built. But I'm just being nice.
[1] https://proceedings.neurips.cc/paper/2019/file/7fea637fd6d02...